Glycol ester of benzoic acid.



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LUDWIG TAUB AND HANS HAHL, 0F ELBERFELD, GERMANY, ASSIGNORS T0 FARIBEN- FABRIKEN VCR-M. FRIEDR. BAYER & 00., OF ELBERFELD, GERMANY, A CORPORA- TION 0F GERMANY.

GLYCOL ESTER 0F BENZOIC ACID.

No Drawing.

Specification of Letters Patent.

Application filed May 17, 1911.

To all whom it may concern:

Be it known that we, LUDWIG TAUB and HANS HAHL, doctors of philosophy, chemists, citizens of the German Empire, residing at Elberfeld,-Germany, have invented new and useful Improvements in Glycol Esters of Benzoic Acid, of which the following is a specification.

We have found that the new benzoic ester of glycol C H .,GOOCH,CH OH can be obtained by esterification of benzoic acid with glycol. The new ester has proved to be an excellent remedy against scabies. It possesses the advantage over Peru balsam hitherto used for this purpose that it is odorless, non-irritant and easily soluble.

In order to illustrate the new process more fully the following example is given, the parts being by weight: 142 parts of the sodium salt of benzoic acid are heated with 80.5 parts of glycol chlorhydrin in an oilbath during 4 hours to 145 C. When the solution is cooled ether is added to it and the ethereal solution is Washed with soda and water. After drying the ether is distilled off and the residue is fractionated in 'vacuo. The ester boils at 176180 C. under a pressure of 20 mm. It is a colorless crys- In testimony whereof we have hereunto set our hands in the scribing witnesses.

LUDWIG TAUB. HANS HAHL. Witnesses:

CHAS. J. WRIGHT, ALFRED HENKEL.

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